CN220704780U - Rigidity-variable steel structure node - Google Patents

Rigidity-variable steel structure node Download PDF

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CN220704780U
CN220704780U CN202321992322.XU CN202321992322U CN220704780U CN 220704780 U CN220704780 U CN 220704780U CN 202321992322 U CN202321992322 U CN 202321992322U CN 220704780 U CN220704780 U CN 220704780U
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steel structure
node
structure node
disc spring
embedded
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姚根圣
杨雷
金崎
王四喜
姚丹
沈德阳
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Shanghai Tunnel Engineering and Rail Transit Design and Research Institute
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Shanghai Tunnel Engineering and Rail Transit Design and Research Institute
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Abstract

The utility model discloses a variable-rigidity steel structure node which is arranged between a concrete buttress and a steel member. The utility model has the advantages that: the device is used in a steel structure to realize the rotation of a steel structure node, the rotation rigidity of the node is variable through different combinations of the disc springs, and when the rigidity of the disc spring group is extremely low, the node can be considered to be in a hinged state; the arrangement of the guide side wall can further control the unidirectional rotation or the bidirectional rotation of the node.

Description

一种变刚度钢结构节点A variable stiffness steel structure node

技术领域Technical field

本实用新型涉及钢结构技术领域,具体涉及一种变刚度钢结构节点。The utility model relates to the technical field of steel structures, in particular to a variable-rigidity steel structure node.

背景技术Background technique

钢结构中,钢结构与混凝土支墩之间的连接通常采用3种形式,柔性连接(也称较接)、刚性连接以及变刚度连接。其中,刚性连接是指完全不转动,柔性连接(铰接)是指可自由转动。而变刚度连接则是介于柔性连接与刚性连接之间的一种连接形式。In steel structures, there are usually three types of connections between steel structures and concrete piers, namely flexible connections (also called joints), rigid connections and variable stiffness connections. Among them, rigid connection means that it does not rotate at all, and flexible connection (hinge) means that it can rotate freely. The variable stiffness connection is a connection form between flexible connection and rigid connection.

变刚度支座相对于柔性连接的铰接支座来说,支座处受力会大;相对刚性连接的固结支座来说,支座受力会小,介于两者之间。Compared with the flexible-connected hinged bearing, the variable-stiffness bearing will have a greater force on the bearing; compared with the rigidly-connected consolidated bearing, the bearing force will be smaller, somewhere in between.

因此,如何实现支座的刚度可变是本领域技术人员所迫切需要的。Therefore, how to realize variable stiffness of the support is an urgent need for those skilled in the art.

发明内容Contents of the invention

本实用新型的目的是根据上述现有技术的不足之处,提供一种变刚度钢结构节点,该变刚度钢结构节点通过采用碟簧的不同组合实现节点转动刚度可变,通过导向侧壁的设置进而控制节点单向转动或是双向转动。The purpose of the utility model is to provide a variable stiffness steel structure node based on the above-mentioned deficiencies of the prior art. The variable stiffness steel structure node realizes variable node rotation stiffness by adopting different combinations of disc springs, and controls the node to rotate unidirectionally or bidirectionally by setting a guide side wall.

本实用新型目的实现由以下技术方案完成:The purpose of this utility model is achieved by the following technical solutions:

一种变刚度钢结构节点,设置于混凝土支墩与钢构件之间,其特征在于所述变刚度钢结构节点包括预埋件、垫块、螺栓以及碟簧组,所述预埋件设于所述混凝土支墩的顶面,所述垫块设置于所述预埋件与所述钢构件之间,所述螺栓的螺杆头部端预埋于所述混凝土支墩内、螺杆的连接端突出于所述预埋件并延伸入所述钢构件内,所述螺栓的螺杆连接端上装配有所述碟簧组并通过螺母紧固。A variable stiffness steel structure node is arranged between a concrete pier and a steel member, characterized in that the variable stiffness steel structure node includes an embedded part, a spacer, a bolt and a disc spring group, the embedded part is arranged on the top surface of the concrete pier, the spacer is arranged between the embedded part and the steel member, the screw head end of the bolt is embedded in the concrete pier, the connecting end of the screw protrudes from the embedded part and extends into the steel member, and the disc spring group is assembled on the screw connecting end of the bolt and fastened by a nut.

所述预埋件上开设有四个预留孔以供所述螺栓的螺杆贯穿通过,所述螺栓的设置数量对应于所述预留孔的开设数量。Four reserved holes are opened on the embedded part for the screw rods of the bolts to pass through, and the number of the bolts corresponds to the number of the reserved holes.

所述预埋件的两侧设置有导向侧壁,所述导向侧壁的底边焊接于所述预埋件上,所述导向侧壁的内侧壁面贴靠于所述钢构件的底部以形成导向限位。Guide side walls are provided on both sides of the embedded part, the bottom edge of the guide side wall is welded to the embedded part, and the inner side wall surface of the guide side wall is close to the bottom of the steel member to form a Guide limit.

所述碟簧组由若干碟簧组合而成,各所述碟簧以并联或串联方式进行组合。The disc spring group is composed of a plurality of disc springs, and the disc springs are combined in parallel or in series.

本实用新型的优点是:用于钢结构中,以实现钢结构节点的转动,通过碟簧的不同组合实现节点转动刚度可变,当碟簧组刚度极小时,可以认为节点处于铰接状态;通过导向侧壁的设置进而控制节点单向转动或是双向转动。The advantages of this utility model are: it is used in steel structures to realize the rotation of steel structure nodes, and the node rotation stiffness is variable through different combinations of disc springs. When the disc spring group has extremely small stiffness, the nodes can be considered to be in a hinged state; The setting of the guide side wall further controls the one-way or two-way rotation of the node.

附图说明Description of drawings

图1为本实用新型中变刚度钢结构节点的示意图;FIG1 is a schematic diagram of a variable stiffness steel structure node in the utility model;

图2为本实用新型中预埋件两侧设置导向侧壁的示意图;FIG2 is a schematic diagram of the utility model in which guide side walls are arranged on both sides of the embedded parts;

图3为本实用新型中预埋件上未设置导向侧壁的示意图;Figure 3 is a schematic diagram of the embedded part in the present utility model without guide side walls;

图4为本实用新型中碟簧组采用并联形式的示意图;Figure 4 is a schematic diagram of the parallel connection of the disc spring group in the present utility model;

图5为本实用新型中碟簧组采用串联形式的示意图。Figure 5 is a schematic diagram of the disc spring group in the present utility model in series connection.

具体实施方式Detailed ways

以下结合附图通过实施例对本实用新型的特征及其它相关特征作进一步详细说明,以便于同行业技术人员的理解:The features and other related features of the present utility model will be further described in detail through examples in conjunction with the accompanying drawings to facilitate the understanding of those skilled in the industry:

如图1-5,图中各标记分别为:混凝土支墩1、钢构件2、螺栓3、垫块4、导向侧壁5、预埋件6、碟簧组7、螺母8、预留孔9。As shown in Figure 1-5, the marks in the figure are: concrete pier 1, steel member 2, bolt 3, spacer 4, guide side wall 5, embedded part 6, disc spring group 7, nut 8, reserved hole 9.

实施例:如图1-5所示,本实施例具体涉及一种变刚度钢结构节点,该变刚度钢结构节点设置于混凝土支墩1与钢构件2之间,该变刚度钢结构节点包括预埋件6、垫块4、螺栓3以及碟簧组7,该变刚度钢结构节点通过采用碟簧的不同组合实现节点转动刚度可变,通过导向侧壁5的设置进而控制节点单向转动或是双向转动。Embodiment: As shown in Figures 1-5, this embodiment specifically relates to a variable stiffness steel structure node. The variable stiffness steel structure node is provided between the concrete pier 1 and the steel member 2. The variable stiffness steel structure node includes Embedded parts 6, pads 4, bolts 3 and disc spring group 7. This variable stiffness steel structure node uses different combinations of disc springs to achieve variable node rotation stiffness, and controls the node's one-way rotation through the setting of guide side walls 5 Or rotate in both directions.

如图1-3所示,预埋件6为一预埋设于混凝土支墩1顶面上的钢板,该钢板上开设有四个预留孔9,预留孔9所开设的数量对应于螺栓3的设置数量,且预留孔9呈矩形阵列分布。根据变刚度钢结构节点的单向转动或双向转动的需求,如图2所示在预埋件6的两侧缘部焊接导向侧壁5从而实现单向转动,或者是如图3所示在预埋件6的两侧缘部不焊接导向侧壁5从而实现双向转动。需要说明的是,如图2所示,钢构件2的底部与两侧的导向侧壁5相互贴靠以形成导向。As shown in Figure 1-3, the embedded part 6 is a steel plate pre-embedded on the top surface of the concrete pier 1. There are four reserved holes 9 on the steel plate. The number of reserved holes 9 corresponds to the number of bolts. The number of settings is 3, and the reserved holes 9 are distributed in a rectangular array. According to the demand for one-way rotation or two-way rotation of variable stiffness steel structure nodes, as shown in Figure 2, guide side walls 5 are welded on both sides of the embedded part 6 to achieve one-way rotation, or as shown in Figure 3 The two side edges of the embedded part 6 are not welded to the guide side walls 5 to achieve bidirectional rotation. It should be noted that, as shown in Figure 2, the bottom of the steel member 2 and the guide side walls 5 on both sides are in contact with each other to form a guide.

如图1所示,垫块4设置于预埋件6与钢构件2之间,用于支撑钢构件2并使其可进行转动,垫块4的直径选取较小,如图2或3所示,垫块4设置于预埋件6上并居中于各预留孔9之间设置。As shown in Figure 1, the pad 4 is provided between the embedded part 6 and the steel component 2 to support the steel component 2 and enable it to rotate. The diameter of the pad 4 is selected to be smaller, as shown in Figure 2 or 3. As shown in the figure, the spacer block 4 is arranged on the embedded part 6 and is centrally arranged between the reserved holes 9 .

如图1、4、5所示,螺栓3的螺杆头部端预埋于混凝土支墩1内、螺杆的连接端贯穿通过预埋件6上的预留孔9并延伸入钢构件2内,在螺栓3的螺杆连接端上装配碟簧组7并通过螺母8进行紧固,以使碟簧组7夹设于螺母8与钢构件2的底面之间。碟簧组7可以采用如图4所示的并联形式,或是如图5所示的串联形式。通过改变单片碟簧的规格,碟簧的组合形式,碟簧的组数以改变节点的转动刚度,从而实现节点刚度的可变。节点的转动刚度随转动角度的变化可以近似认为是线性变化,同时节点的转动量取决于碟簧组7的变形能力,在实际工程中,为保证节点长期有效性,要求节点在各工况下的转动角度不能超过碟簧组7的变形能力的0.8倍。As shown in Figures 1, 4, and 5, the screw head end of the bolt 3 is embedded in the concrete pier 1, and the connecting end of the screw penetrates through the reserved hole 9 on the embedded part 6 and extends into the steel member 2. The disc spring group 7 is assembled on the screw connecting end of the bolt 3 and tightened through the nut 8 so that the disc spring group 7 is sandwiched between the nut 8 and the bottom surface of the steel member 2 . The disc spring group 7 can be in parallel form as shown in Figure 4, or in series form as shown in Figure 5. By changing the specifications of the single disc spring, the combination form of the disc spring, and the number of groups of disc springs, the rotational stiffness of the node is changed, thereby achieving variable node stiffness. The change of the rotational stiffness of the node with the rotation angle can be approximately considered as a linear change. At the same time, the rotation amount of the node depends on the deformation ability of the disc spring group 7. In actual engineering, in order to ensure the long-term effectiveness of the node, the node is required to The rotation angle cannot exceed 0.8 times the deformation capacity of the disc spring group 7.

当节点最大转角下的弯矩值小于此节点为刚接下的弯矩值的0.1倍时,可近似看做铰接。碟簧组7的刚度公式如下所示,其中K为单片碟簧的刚度,N为并联碟簧的个数,M为串联碟簧的个数:When the bending moment value at the maximum rotation angle of a node is less than 0.1 times the bending moment value just connected to this node, it can be approximately regarded as a hinged joint. The stiffness formula of disc spring group 7 is as follows, where K is the stiffness of a single disc spring, N is the number of parallel disc springs, and M is the number of series disc springs:

K并联=N·KK parallel connection =N·K

本实施例中变刚度钢结构的转动刚度的理论公式为:The theoretical formula of the rotational stiffness of the variable stiffness steel structure in this embodiment is:

其中:L为预埋件6的长度,K碟簧组为单侧碟簧组的刚度,可以根据碟簧组7的串并联关系求得。Among them: L is the length of the embedded part 6, and K disc spring group is the stiffness of the single-sided disc spring group, which can be obtained based on the series-parallel relationship of the disc spring group 7.

如图1-3所示,本实施例中对于单/双向变刚度节点的设计考虑以下几个原则:As shown in Figures 1-3, the design of the single/double variable stiffness node in this embodiment considers the following principles:

(1)根据工程实际要求,判断是否需要配置导向侧壁5以实现单向转动。(1) Based on the actual requirements of the project, determine whether it is necessary to configure the guide side wall 5 to achieve one-way rotation.

(2)在预期最不利工况下,节点的转动角度不超过节点碟簧组7的变形量的0.8倍,同时节点区各组件保持弹性状态。(2) Under the expected most unfavorable working conditions, the rotation angle of the node does not exceed 0.8 times the deformation of the node disc spring group 7, and at the same time, each component in the node area maintains an elastic state.

(3)节点区域的各组件的设计具体参考GB50017-2017《钢结构设计标准》。(3) The design of each component in the node area shall refer to GB50017-2017 "Steel Structure Design Standard".

本实施例的有益效果为:用于钢结构中,以实现钢结构节点的转动,通过碟簧的不同组合实现节点转动刚度可变,当碟簧组刚度极小时,可以认为节点处于铰接状态;通过导向侧壁的设置进而控制节点单向转动或是双向转动。The beneficial effects of this embodiment are: used in steel structures to realize the rotation of steel structure nodes, and the node rotation stiffness can be variable through different combinations of disc springs. When the stiffness of the disc spring group is extremely small, the nodes can be considered to be in a hinged state; The one-way or two-way rotation of the node is controlled by the setting of the guide side wall.

Claims (4)

1.一种变刚度钢结构节点,设置于混凝土支墩与钢构件之间,其特征在于所述变刚度钢结构节点包括预埋件、垫块、螺栓以及碟簧组,所述预埋件设于所述混凝土支墩的顶面,所述垫块设置于所述预埋件与所述钢构件之间,所述螺栓的螺杆头部端预埋于所述混凝土支墩内、螺杆的连接端突出于所述预埋件并延伸入所述钢构件内,所述螺栓的螺杆连接端上装配有所述碟簧组并通过螺母紧固。1. A variable stiffness steel structure node, which is disposed between concrete piers and steel members. It is characterized in that the variable stiffness steel structure node includes embedded parts, pads, bolts and disc spring groups. The embedded parts Located on the top surface of the concrete pier, the pad is arranged between the embedded part and the steel member, the head end of the screw of the bolt is embedded in the concrete pier, and the head end of the screw is embedded in the concrete pier. The connecting end protrudes from the embedded part and extends into the steel component. The screw connecting end of the bolt is equipped with the disc spring group and is tightened by a nut. 2.根据权利要求1所述的一种变刚度钢结构节点,其特征在于所述预埋件上开设有四个预留孔以供所述螺栓的螺杆贯穿通过,所述螺栓的设置数量对应于所述预留孔的开设数量。2. A variable stiffness steel structure node according to claim 1, characterized in that four reserved holes are opened on the embedded part for the screw rods of the bolts to pass through, and the number of the bolts corresponds to The number of reserved holes. 3.根据权利要求1所述的一种变刚度钢结构节点,其特征在于所述预埋件的两侧设置有导向侧壁,所述导向侧壁的底边焊接于所述预埋件上,所述导向侧壁的内侧壁面贴靠于所述钢构件的底部以形成导向限位。3. A variable stiffness steel structure node according to claim 1, characterized in that guide side walls are provided on both sides of the embedded part, and the bottom edge of the guide side wall is welded to the embedded part. , the inner side wall surface of the guide side wall abuts the bottom of the steel member to form a guide limiter. 4.根据权利要求1所述的一种变刚度钢结构节点,其特征在于所述碟簧组由若干碟簧组合而成,各所述碟簧以并联或串联方式进行组合。4. A variable stiffness steel structure node according to claim 1, characterized in that the disc spring group is composed of a plurality of disc springs, and each of the disc springs is combined in parallel or in series.
CN202321992322.XU 2023-07-27 2023-07-27 Rigidity-variable steel structure node Active CN220704780U (en)

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